Ark-0
Ark-0 is a test network for trying things out. It may be reset at any time.

Block 19078

Hash
00000065e254c80514b428214fb0dfd23cbe4e73fd948aa71a1eed8cd77cf120
Confirmations
22477
Time
2026-10-10 02:53:12 UTC
Median time
2026-10-10 02:44:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1a1409f8277f4c9a5ec33f0967588f8b795d0346c3d90a7934da93facd41dd46
Previous block
000000569bc72b376a2cc1844bc4377ee75941d29fab1f059231c0fa7ed9fe42
Next block
000000e1b7ccc4a60747d60e65f5014ef157cc3b14836faad91b0a349eab1151

ML-DSA-44 block signature (M2)

M2 is an experimental rule of this test network. From a height set in its build, a node that enforces M2 accepts a block only if, besides the classical signet signature, the block carries a valid ML-DSA-44 signature by the Ark-0 block key, in its coinbase's witness commitment output. This page shows that signature; it does not check it.

Block 19078 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
d158215118a3045272d7302c049a9de3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1a1409f8277f…93facd41dd46 coinbase1250